﻿#region License

//===================================================================================
//Copyright 2010 HexaSystems Corporation
//===================================================================================
//Licensed under the Apache License, Version 2.0 (the "License");
//you may not use this file except in compliance with the License.
//You may obtain a copy of the License at
//http://www.apache.org/licenses/LICENSE-2.0
//===================================================================================
//Unless required by applicable law or agreed to in writing, software
//distributed under the License is distributed on an "AS IS" BASIS,
//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//See the License for the specific language governing permissions and
//limitations under the License.
//===================================================================================

#endregion

using System.Web.UI;
using System.Web.Compilation;
using System.CodeDom;

namespace Hexa.Core.Web.UI
{
	/// <summary>
	/// 
	/// </summary>
	[ExpressionPrefix("Code")]
	public sealed class CodeExpressionBuilder : ExpressionBuilder
	{
		/// <summary>
		/// When overridden in a derived class, returns code that is used during page execution to obtain the evaluated expression.
		/// Requieres de following configuration in web.config:
		/// <compilation debug="false">
		///    <expressionBuilders>
		///        <add expressionPrefix="Code" type="Hexa.Core.Web.UI.CodeExpressionBuilder, Hexa.Core"/>
		///    </expressionBuilders>
		///	</compilation>
		/// </summary>
		/// <param name="entry">The object that represents information about the property bound to by the expression.</param>
		/// <param name="parsedData">The object containing parsed data as returned by <see cref="M:System.Web.Compilation.ExpressionBuilder.ParseExpression(System.String,System.Type,System.Web.Compilation.ExpressionBuilderContext)"/>.</param>
		/// <param name="context">Contextual information for the evaluation of the expression.</param>
		/// <returns>
		/// A <see cref="T:System.CodeDom.CodeExpression"/> that is used for property assignment.
		/// </returns>
		public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
		{
			return new CodeSnippetExpression(entry.Expression);
		}

	}

}
